SU1170258A1 - Heat pipe - Google Patents

Description

The invention relates to the field

heat engineering, namely to heat transfer devices.

The purpose of the invention is to increase the heat transfer capacity of the heat pipe.

FIG. 1 schematically shows a longitudinal section of a heat pipe; in fig. 2 - the same with the artery; in fig. 3 - the same, with the width and height of the corrugation of the grid decreasing with increasing distance from the artery; in fig. 4 the same, with the height of the corrugation, the smaller height of the artery.

The heat pipe contains a housing 1 with zones. 2-4 of evaporation, condensation and transport, respectively, and a capillary structure placed on its inner surface in the form of a grid 5 with longitudinal corrugations 6 and one or more arteries 7 formed by sections of the grid 5 without corrugations placed with constant the gap relative to the housing 1. The corrugations 6 of the grid 5 can be made with a height of 25 and a width decreasing as far as the arteries are 7. In addition, the corrugations 6 can have a constant height smaller than the height of the artery

7. In zone 2 evaporation, artery 7 may be absent. The end of the grid 5 in the zone

2

2 evaporation is fixed so that the holes or slots in the areas of contact of the grid 5 with the housing or end caps have a capillary pressure not less than the capillary pressure of the grid 5. The corrugations 6 in zones 2 and 3 of evaporation and condensation can be made with a height decreasing in the direction of the ends of the housing 10 1 (not shown).

Heat pipe works as follows.

When heat is supplied and removed in the corresponding zones, heat and mass transfer is carried out through pipe 15 with a change in the aggregate state of the coolant; part of the coolant condensate flow moves through the arteries (arteries) 7 with a small hydraulic resistance. When working (testing) in the field of gravity of a pipe with a decreasing height of the corrugations 6 (fig.Z), the artery 7 is placed below, all parts of the capillary structure, including the upper ones *, will be stably filled with a liquid heat carrier. The execution of the corrugation 6 with low height (figure 4) provides a low amount of thermal resistance of the heat pipe in the areas of evaporation and condensation.

FIG I

1170258

FIG. 3 FIG. four

Claims (3)

1. HEAT PIPE, comprising a casing with zones of evaporation, condensation and transport and a capillary structure in the form of a grid with longitudinal corrugations located on its inner surface, distinguishing. and with the fact that, in order to increase the heat transfer capacity, the grid on the part of the perimeter is made without corrugations and is located on this section with a constant gap relative to the body forming the artery. 2. Pipe pop. 1, characterized in that, in order to ensure the stable characteristics of the pipe when tested in the field of mass forces, the grid corrugations are made in width and height, decreasing as they move away from the artery. 3. A pipe according to claim 1, distinguished by the fact that the corrugations have a height “lower than the height of the artery. δυ 1170258 > 1170258 one